More overnight road closures will be in place next week as part of the junction work near Wootton Hall Park in Northampton.
A spokesman for Northamptonshire County Council said the £2.7 million in Mereway was progressing well.
“The new signalised gyratory will help improve traffic safety and vehicle flow on the town’s ring-road, including access to the Wootton Hall site.
“As the project progresses, a series of weekend and overnight road closures is needed so resurfacing work can take place,” he added.
The closures will be as follows:
* 8pm on Tuesday, March 29 to 6am on Wednesday, March 30 – Queen Eleanor roundabout to Tesco supermarket. Westbound
* 8pm on Friday, April 8 to 6am on Saturday, April 9 - Queen Eleanor roundabout to Tesco supermarket. Both directions, east and west.